Out-of-bounds Write Affecting virt:rhel/libiscsi-devel package, versions <0:1.18.0-8.module_el8.6.0+2880+7d9e3703


Severity

Recommended
0.0
medium
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-ALMALINUX8-VIRT-5647251
  • published28 May 2023
  • disclosed18 May 2021

Introduced: 18 May 2021

CVE-2020-27821  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 virt:rhel/libiscsi-devel to version 0:1.18.0-8.module_el8.6.0+2880+7d9e3703 or higher.
This issue was patched in ALSA-2021:1762.

NVD Description

Note: Versions mentioned in the description apply only to the upstream virt:rhel/libiscsi-devel package and not the virt:rhel/libiscsi-devel package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0.

CVSS Scores

version 3.1